The Water Scraper is an innovative portable water purification device. It uses batteries or a hand crank to purify a litre of water in just five minutes. It uses a Nanofiltration filter to remove sub-micron particles from water, and can correct pH levels. Its main benefit is that it is easy to transport. The Water Scraper can be used anywhere and is powered by renewable sources.
A team of researchers at the Indian Institute of Science has developed a wastewater treatment system that won first place at a recent Google Pitch Fest in Zurich. The researchers are working to improve water purification in disaster-affected areas and in remote locations. Their technology is environmentally friendly, as it does not use chemicals or membranes. This innovative wastewater treatment system uses only water.